歌う鳥や人間の乳児における声の組み合わせ能力の段階的な獲得

Dina Lipkind¹, Gary F Marcus, Douglas K Bemis

¹Department of Psychology, Hunter College, City University of New York, New York, NY 10065, USA. dina.lipkind@gmail.com

Nature

|May 31, 2013

まとめ

人間を含む声の学習能力を持つ種は,声のスキルを段階的に発達させる. この研究は,種の間で新しい声の移行を習得するための一般的な段階的なプロセスを明らかにし,歌とスピーチの発達に影響を与えます.

科学分野:

比較心理学とは比較心理学である.
発達生物学発達生物学とは
バイオアコースティクスバイオアコースティクス

背景:

声の学習は,人間の言語と鳥の鳴き声に不可欠です.
声の組み合わせ能力の発達の起源は,ほとんど不明のままである.

研究の目的:

声の組み合わせ能力のオントジェネティックな発達を調査する.
種間の声の配列獲得における共通のパターンを特定する.

主な方法:

若いゼブラフィンチ (Taeniopygia guttata) の歌のシーケンスの実験操作.
ベンガルのフィンチ (Lonchura striata domestica) の自然な歌の発達に関する分析.
言語化前のヒト乳児における声の移行に関する観察的研究.

主要な成果:

声の移行を習得する共通の段階的なパターンは,3つの種すべてで観察されました.
ゼブラ・フィンチは,ペアバイス・トランジションの漸進的な習得を通じて,新しい音節順を習得した.
ベンガルのフィンチと人間の乳児も,声の構文とバババの配列の段階的な発達を示しました.

結論:

声の組み合わせ能力は,保存された段階的な生成プロセスを通して発達する.
このペアウェイズ・ヴォーカル・トランジションの漸進的な獲得は,ヒトにおける複雑な声の配列の開発における課題を説明するかもしれない.

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